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Mahle OE moly piston ring set (HV385) with steel top, sized 3.779 x 1.2 mm and .133RW. This moly ring set is supplied for piston sealing and oil control during engine rebuilds and maintenance. The set name and dimensions identify it as a replacement ring pack for matching pistons where these diameters and radial width are required.
Mahle Rings Performance HV385 Steel Top 3.779 x 1.2MM .133RW Moly Ring Set
